A family of 2D lanthanide complexes based on flexible thiodiacetic acid with magnetocaloric or ferromagnetic properties
| Autor: | Xin-Rong Xie, Piao-Ping Dong, He-Rui Wen, Fu-Yong Liang, Sui-Jun Liu, Yun-Zhi Tang |
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| Rok vydání: | 2017 |
| Předmět: |
Lanthanide
Ferromagnetic material properties 010405 organic chemistry Chemistry Thermal decomposition Inorganic chemistry Relaxation (NMR) 010402 general chemistry 01 natural sciences 0104 chemical sciences Ion Inorganic Chemistry Magnetization Crystallography Ferromagnetism Materials Chemistry Magnetic refrigeration Physical and Theoretical Chemistry |
| Zdroj: | Inorganica Chimica Acta. 455:190-196 |
| ISSN: | 0020-1693 |
| DOI: | 10.1016/j.ica.2016.10.026 |
| Popis: | Hydrothermal reaction of Ln2O3 and 2,2′-thiodiacetic acid (H2tda) led to three chain-based two-dimensional (2D) lanthanide complexes, namely [Ln2(tda)3(H2O)2]n (Ln = Gd3+ (1), Tb3+ (2), Dy3+ (3)). These complexes exhibit enhanced stabilities with the decomposition temperature of around 300 °C and the insolubility in common organic solvents. Magnetic studies show that complex 1 exhibits weak antiferromagnetic coupling between the Gd3+ ions and a large magnetocaloric effect with −ΔSmmax = 39.2 J kg−1 K−1 and 94.8 mJ cm−3 K−1 at 7 T and 2 K. Complex 2 displays ferromagnetic and weak field-induced SMM behaviors, and complex 3 almost does not exhibit slow relaxation of the magnetization. |
| Databáze: | OpenAIRE |
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